C++ (Cpp) USB_DMATAG_TO_XROOTの例

コード例 #1

ファイル: usb_busdma.c プロジェクト: ragunath3252/patch-rtems

/*------------------------------------------------------------------------*
 *	usb_pc_dmamap_create - create a DMA map
 *
 * Returns:
 *    0: Success
 * Else: Failure
 *------------------------------------------------------------------------*/
uint8_t
usb_pc_dmamap_create(struct usb_page_cache *pc, usb_size_t size)
{
	struct usb_xfer_root *info;
	struct usb_dma_tag *utag;

	/* get info */
	info = USB_DMATAG_TO_XROOT(pc->tag_parent);

	/* sanity check */
	if (info == NULL) {
		goto error;
	}
	utag = usb_dma_tag_find(pc->tag_parent, size, 1);
	if (utag == NULL) {
		goto error;
	}
	/* create DMA map */
	if (bus_dmamap_create(utag->tag, 0, &pc->map)) {
		goto error;
	}
	pc->tag = utag->tag;
	return 0;			/* success */

error:
	pc->map = NULL;
	pc->tag = NULL;
	return 1;			/* failure */
}

コード例 #2

ファイル: usb_busdma_loader.c プロジェクト: MattDooner/freebsd-west

/*------------------------------------------------------------------------*
 *	usb_bdma_done_event
 *
 * This function is called when the BUS-DMA has loaded virtual memory
 * into DMA, if any.
 *------------------------------------------------------------------------*/
void
usb_bdma_done_event(struct usb_dma_parent_tag *udpt)
{
	struct usb_xfer_root *info;

	info = USB_DMATAG_TO_XROOT(udpt);

	mtx_assert(info->xfer_mtx, MA_OWNED);

	/* copy error */
	info->dma_error = udpt->dma_error;

	/* enter workloop again */
	usb_command_wrapper(&info->dma_q,
	    info->dma_q.curr);
}

コード例 #3

ファイル: usb_busdma.c プロジェクト: Gwenio/DragonFlyBSD

/*------------------------------------------------------------------------*
 *	usb_bdma_done_event
 *
 * This function is called when the BUS-DMA has loaded virtual memory
 * into DMA, if any.
 *------------------------------------------------------------------------*/
void
usb_bdma_done_event(struct usb_dma_parent_tag *udpt)
{
	struct usb_xfer_root *info;

	info = USB_DMATAG_TO_XROOT(udpt);

	KKASSERT(lockowned(info->xfer_lock));

	/* copy error */
	info->dma_error = udpt->dma_error;

	/* enter workloop again */
	usb_command_wrapper(&info->dma_q,
	    info->dma_q.curr);
}